package com.neusoft.elm.filter;
import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletResponse;
@WebFilter("/*")
public class CorsFilter implements Filter{
 @Override
 public void init(FilterConfig filterConfig) throws ServletException { }

 @Override
 public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse,
FilterChain filterChain) throws IOException, ServletException {
 HttpServletResponse response = (HttpServletResponse) servletResponse;
 //允许前端5173端口进行跨域访问
 response.setHeader("Access-Control-Allow-Origin", "http://localhost:5173");
 response.setHeader("Access-Control-Allow-Credentials", "true");
 response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE, PUT");
 response.setHeader("Access-Control-Max-Age", "3628800");
 response.setHeader("Access-Control-Allow-Headers", "x-requested-with,Authorization,Content-Type,Accept,Origin,X-Requested-With");
 filterChain.doFilter(servletRequest, servletResponse);
 }

 @Override
 public void destroy() { }
}